topic

• Discovery and exploration9
• Administrative and political divisions7
• Real property6
• Parks5
• Sewerage5
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name

• Geological Survey (U.S.)37
• Julius Bien & Co17
• Walcott, Charles D. (Charles Doolittle), 1850-192715
• Gannett, Henry, 1846-191414
• Northern Transcontinental Survey10
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collection

place

• Pennsylvania15
• United States12
• Massachusetts11
• Alaska9
• Washington (State)7
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genre

• Maps113
• Bathymetric maps4
• Geological maps4
• Diagrams3
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publisher

• U.S. Geological Survey19
• U.S. Congress9
• Northern Transcontinental Survey?6
• publisher not identified6
• Advisory Board on Drainage4
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division

• Map Division113

type

• cartographic113
• text2
• still image1